diff --git a/ChangeLog b/ChangeLog
index 5490fb4c11..7467888294 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Nov  9 11:48:40 2014  Tanaka Akira  <akr@fsij.org>
+
+	* test/net/http: Examine webrick log.
+
 Sun Nov  9 11:45:19 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
 
 	* gems/bundled_gems: upgraded to test-unit 3.0.5.
diff --git a/test/net/http/test_http.rb b/test/net/http/test_http.rb
index 704456f3a3..bd0d960b96 100644
--- a/test/net/http/test_http.rb
+++ b/test/net/http/test_http.rb
@@ -277,6 +277,7 @@ module TestNetHTTP_version_1_1_methods
       end
     }
     assert_equal 1, i
+    @log_pattern = nil # server may encount ECONNRESET
   end
 
   def test_get__implicit_start
diff --git a/test/net/http/test_https.rb b/test/net/http/test_https.rb
index 0df003bdda..89845c584a 100644
--- a/test/net/http/test_https.rb
+++ b/test/net/http/test_https.rb
@@ -117,6 +117,7 @@ class TestNetHTTPS < Test::Unit::TestCase
       end
     }
     assert_match(/certificate verify failed/, ex.message)
+    @log_pattern = /ERROR OpenSSL::SSL::SSLError:/
   end
 
   def test_identity_verify_failure
diff --git a/test/net/http/utils.rb b/test/net/http/utils.rb
index 7afef411ec..3bf7695532 100644
--- a/test/net/http/utils.rb
+++ b/test/net/http/utils.rb
@@ -36,16 +36,19 @@ module TestNetHTTPUtils
       @server.shutdown
       @server_thread.join
     end
+    assert_match(@log_pattern, @log.string) if @log_pattern
     # resume global state
     Net::HTTP.version_1_2
   end
 
   def spawn_server
+    @log = StringIO.new('')
+    @log_pattern = /\A\z/
     @config = self.class::CONFIG
     server_config = {
       :BindAddress => config('host'),
       :Port => 0,
-      :Logger => WEBrick::Log.new(NullWriter.new),
+      :Logger => WEBrick::Log.new(@log, WEBrick::BasicLog::WARN),
       :AccessLog => [],
       :ServerType => Thread,
     }